Merge pull request rails#9178 from robertomiranda/best-standard-suppo…

…rt-guide Update upgrading guide with ActionDispatch::BestStandardsSupport removal [ci skip]
zweitag · Feb 4, 2013 · c163916 · c163916
2 parents 5efce21 + ebcb53c
commit c163916
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diff --git a/guides/source/upgrading_ruby_on_rails.md b/guides/source/upgrading_ruby_on_rails.md
@@ -82,6 +82,8 @@ becomes
 get 'こんにちは', controller: 'welcome', action: 'index'
 ```
 
+* Rails 4.0 has removed ActionDispatch::BestStandardsSupport middleware, !DOCTYPE html already triggers standards mode per http://msdn.microsoft.com/en-us/library/jj676915(v=vs.85).aspx and ChromeFrame header has been moved to `config.action_dispatch.default_headers`
+
 ### Active Support
 
 Rails 4.0 removes the `j` alias for `ERB::Util#json_escape` since `j` is already used for `ActionView::Helpers::JavaScriptHelper#escape_javascript`.